Birdsill holly



y UNITED sTA'rns rArEN'r ormoni.

BIRDsILL HOLLY, or sismica` FALLS, New YonmAssiGNon To` sILsBY, Raon & HOLLY.

pivron'risInG-MACHINE.

Specification of LettersPatent Noi.' .iiliAOgdated July 25,` 1854.. i

T0 all (whom t may concern." l L Be it known that I, BinDsILL HOLLY, of Seneca-Falls," in the county of Seneca and State `of New York, have invented a new and `useful Improved Mortising-lVlachine,`

and that thefollowing isa full,` clear, and' eXact description of the" principle or character which distinguishes it from all other things before known and of the usual `manner of `making, modifying, and using the same. L

My invention consists, first, inthe mode of working thel chisel; second, in the mode of reversing the chisel; third in the mode of holding and adjusting the chisel.

Figure l is front view of the `mortising` machine. Fig. 2, is a sideview. Fig. 3 is a view of the rentering belt and shaft by which it is worked. Fig. t, the lever, &c., by which the chisel is reversed in its stock;

Fig.` 5 a detached view` of the chisel and stock; F ig; 6 a view showing the reversed V shape of the end of the chisel.

Manyparts of my machine are constructed in the ordinary manner of such machinery.`

A is the frame; B the table; c the clamps; D the driving pulley; E the frame work for supporting the mechanism used in reversing the chisel in its stock, motion being communicated `in .any manner to the driving pulley D on the shaft F.

The operation of working the chisel is as follows: The operator places his foot upon the treadle G; this communicates by means of a strap s2 with what I call the re-r entering belt H and causes this re'entering belt H to hug closely the enlarged drum I Fig. 3 on the shaft F; this shaft' in its rotation in the direction of the arrow Fig. 3, depresses the rentering belt `and therefore the frame K, which is connected with the belt by means of the vertical rod L, the cross rod M` and the belts N passing through the cross rod and the rentering belt. The frameK carries the chisel stock a@ and the L chisel as long as the friction between the in immediate use, I have arranged a spring sf on orlabovethe spring s to which it is fastened by bolts; to the springe is; attached a belt t by passing the end of the spring in one of `the holes in this belt; (see Fig. l) the belt `i5 is attachedto the`reentering belt H, as seen `in `Fig. 3; when thereentering beltI is depressed by its co-nnection with the shaft "the belt and the ment on the shaft where the chisel is not spring s are also depressed, andwhen this `connection ceases the spring s resumes its normal position; and by means of it raises the rentering part of the belt H and completely loosens it from the shaft as seen in Fig. 3.v

To reverse the chisel in its sto-ck, the arrangement is as follows The stock is firmly attached to a vertical shaft 0, which turns `freely in the frame K, on this shaft 0L, is a .notched ring or pulley fu, (see Fig.` Il), into the notches of this ring works .a tooth 'v' on a spring i; this spring is fastened to the chisel frame at P and is connected to a hinged bar lz hinged at its lower end as shown in Fig. 2; to the hinged bar L, about its middle 'is connected a rod el which clamps a shaft P, at one end of this shaft is a pulleyQ, around which is a friction belt R, which also passes around the ring u on the vertical shaft 0, at the other end ofthe shaft P is a cog wheel w; the sha-ft P is supported by the frame E which supports also a shaft P on which is a cog wheel w and a pulley s (see Fig. 2) around the pulley s and the main driving shaft F, there passes a friction band T which communicates motion from the main shaft to the shaftP. To reverse the chisel the operator draws toward himself the handle end of the lever u which is hinged to the main frame at u; the

opposite end `of the lever u presses the hinged bar z, back, and through the rod rl, brings the cog wheel w into gear `with the cog wheel lw motion is thus communicated to the cog wheel w, the shaft P, the pulley Q, and through the belt R to the ring v on the vertical shaft` o. The backward movement of the hinged bar L has also carried back the end ofthe spring a' and thus raises the tooth 'v' on this spring out of the notch in the ring 1^; the ring 1' in its revolution carries with it the shaft o and the chisel stock and chisel. When the chisel vreleases the hand lever u, and the parts justA described assume their former position by the action of the spring z', and the tooth o drops into another notch on the ring 9".

My improved inode of holding and adjusting the chisel is effected by the reversed V (A) shape vvhich'I give to this tool at its upper extremity and -by the corresponding V shaped cavity in the part of the stock into rmly in itsplace.

n What I claim as myy invention is- 1. The Inode of working the chisel as set forth, the same consisting in the rentering belt or its equivalent in Combination With the spring (s) and hand or foot strap (s2) and in combination therewith I claim the tongue strap (t) With its spring (s) for the purpose ofkeeping the belt loose upon the driving shaft. 2. I claim the mode of reversing the chisel or of keeping it in and out of gear the same consisting in the combination of the hinged bar (it) the spring (2') the notched ring (o) the treadle (u) or its equivalent and the 35 rod connected With the gear Wheel on the pulley frame.

BIRD sILL HOLLY.

Witnesses.:

T. CAMPBELL, P. NENNING. 

